CHOICEMMED Blue Finger Pulse Oximeter and Pedometer - SPO2 Pulse Oximeter Pedometer 2 in 1 - Portable Oxygen Sensor with Included Batteries - O2 Saturation Monitor Unique design,Pulse oximeter and Pedometer two-in-one product. Two measurement modes:Oximeter mode is for spot measuring blood oxygen saturation(SpO2) and pulse rate.Pedometer mode is for measuring your steps and calories burned while you are walking. Simple operation,Low power warning,Automatic power off function. LCD display,Comfortable finger stall,Small device with lanyard is portable,Free attached battery can be continuously operated as long as 10 hours. Suitable for healthy individuals who are performing non-medical activities such as sports and aviation.It is not a medical device.